mail.btec.jp - robtex.com

mail.btec.jp

DNSSEC⚠️ Not signed
A183.90.231.6🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.
PTRsv205.xbiz.ne.jp

btec.jp

DNSSEC⚠️ Not signed
A183.90.231.6🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.
NSns1.xbiz.ne.jp ⭐
NSns2.xbiz.ne.jp
NSns3.xbiz.ne.jp
MXbtec.jp ⭐
TXTv=spf1 +a:sv205.xbiz.ne.jp +a:btec.jp +mx include:spf.sender.xserver.jp ~all
SOAns1.xbiz.ne.jproot@xbiz.ne.jp serial=0

Previously MX for

btec.jp

Same first word

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A183.90.231.6210.238.189.163
●A183.90.231.62026-03-12 → 2026-04-13 · 3 obs
○ 2016-11-13 17:31:38
● 2026-03-12 15:53:38
● 2026-04-13 20:08:08
○A210.238.189.1632015-08-04 → 2016-11-13 · 4 obs
● 2015-08-04 02:14:20
● 2016-11-13 17:31:38
○ 2026-03-12 15:53:38
○ 2026-04-13 20:08:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
btec.jpns2.xbiz.ne.jp, ns3.xbiz.ne.jp, ns1.xbiz.ne.jp3 records

✅ Authoritative Response

Server:35.76.79.244

NS records: ns2.xbiz.ne.jp, ns3.xbiz.ne.jp, ns1.xbiz.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for btec.jp (unsigned zone)

⏱️ Timing

Total: 848ms | Queries: -

📄 Records

TypeCountSample Data
A1183.90.231.6

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns3.xbiz.ne.jp, ns2.xbiz.ne.jp, ns1.xbiz.ne.jp)

Analysis

IP Addresses

mail.btec.jp points to a single IP number: 183.90.231.6.

Other host names, for instance www.tukiesu.co.jp, mail.nara-eia-young.org, medica.co.jp, atca.jp and tukiesu.co.jp share IP numbers with mail.btec.jp.